The normal CTG Flashcards
The antenatal CTG above was recorded from a woman with reduced fetal movements. Note the use of the fetal movement marker button. What is the most appropriate management at this time?
Continue the CTG
The baseline fetal heart rate is unable to be accurately determined at this time because of fetal activity (note the maternal fetal movement marker) so the monitoring must continue until a baseline is established and the CTG meets the criteria for normal.
What is the most appropriate baseline fetal heart rate for the antenatal CTG above?
125bpm
this is the best description of the mean resting fetal heart rate at this time.
What is the likely cause of the reduced baseline variability in the initial part of the above CTG?
Fetal sleep
with normal baseline variability and accelerations following the quiet phase and an absence of decelerations, fetal sleep is the likely cause.
This CTG was recorded from a primigravid woman, about to receive a cervical ripening agent, prior to induction for post dates. What is the most appropriate management at this time?
Correctly apply the toco-transducer
In the antenatal CTG above, how is the baseline variability best described?
Normal
the baseline variability is normal (6-25bpm) at this time
The CTG above was recorded from a multigravid woman at 40 weeks gestation. What is the baseline fetal heart rate at this time?
In the CTG above, what is the most accurate baseline fetal heart rate?
150-155bpm
this is the most accurate description of the baseline fetal heart rate at this time.
How is the antenatal CTG above best described by RANZCOG definition?
The antenatal CTG above was recorded from a woman with reduced fetal movements. Note the use of the fetal movement marker button. How would you best describe the baseline fetal heart rate?
Uncertain
the baseline fetal heart rate is unable to be accurately determined at this time because of likely fetal activity, as indicated by the use of the maternal fetal movement button.
How is the baseline fetal heart rate best described in the CTG above?
130bpm
130bpm is the most accurate description of the baseline rate at this time.
By RANZCOG definition, how is the intrapartum CTG above best defined?
Normal
All the features of a normal CTG have been met by RANZCOG definition.
The CTG above was recorded from a primigravid woman at 37 weeks with pregnancy induced hypertension, on medication. How is the baseline fetal heart rate best described?
130-135bpm
at this time 130-135bpm is the most accurate mean resting BFHR.
